Transfer Valves - Two-stage pumps equipped with transfer valves need regular exercise.  The recommended practice is to leave the valve in the volume mode and change it over when you engage the pump on a run.  At a minimum, the transfer valve should be exercised several times when doing a daily or weekly pump check.

Leaking Discharge Valves - A leaking discharge valve will usually allow for pump pressure to be shown on the individual dischage gauge that is equal to the pump discharge gauge when the discharge is capped off.  If this is the case, caution firefighters not to remove the cap with the discharge under pressure.  Serious injury or death could occur.  Place some form of visual identifier on the discharge that it should not be opened until the discharge is repaired.